Molding-flask.



' PATENTED'MAR; a, 1903.

P. MOGUIRB.

MOLDING FLASK. Arruonron nun) MAB-11,1992.

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MOLDING FLASK. APPLICATION FILED MAR. 21, 1902.

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WITNESSES: $4. m 2; a away/1 UNITED STATES PATENT OFFICE.

PETER J. MCGUIRE, OF BLAIRSVILLE, PENNSYLVANIA, ASSIGNOR TO THE CHAMPIONSANITARY ENAMEL WARE CO., A CORPORATION OF PENN- SYLVANIA.

MOLDING-FLASK.

SPECIFICATION forming part of Letters Patent N 0. 721,728, dated March3, 1903. Application filed March 21, 1902. $erial No. 99,295. (Nomodel.)

To aZZ whom it may concern:

Be it known that I, PETER J. MCGUIRE, a citizen of the UnitedStates,residing'at Blairsville, in the county of Indiana and State ofPennsylvania, have invented a new and usefulImprovement inMolding-Flasks, of which improvement the following is a specification.

This invention relates to improvements in molding-flasks, particularlyto flasks employed in molding metal bodies having outwardly-extendedflanges, such as bath-tubs.

In the art of molding such bodies as bathtubs it is difficult to suspendor retain the sand in the cope or cheek portion of the mold forming theflange, and the usual custom in such cases is to closely embed aplurality of spikes in the sand about said flange, which spiking is notalways an effective remedy, as more or less of the spikes come incontact with the rammer, displacing the same or shattering the sandthereabout, which when relieved of the pattern require dressing.

Again, if the sand be overly damp the spike method is frequently of noavail. Besides, the time required to thus spike the mold and loss ofspikes materially reduce the profits of manufacture.

My object therefore is to provide a simple and practical means inconnection with the flask whereby the above difflculties are overcome.

In the accompanying drawings I have by various views illustrated myimprovements for retaining the sand in the flask where the flange of thebody is to be formed, in which drawings Figure I is an inverted planview. Fig. II is a transverse sectional view through the same, showingits application to the pattern or molding machine, the latter being alsoshown partly in section. Fig. III is a perspective view of a portion ofsaid flask. Fig. IV is a perspective view of a portion of a flask,showing variations in the means employed for the retention of the sand.Fig. V is atransverse sectional view of a portion of a flask andpattern, showing the manner of spiking as heretofore practiced for theretention of the sand at the tub-flange.

Further referring to said drawings for a detailed description of saidviews, particularly Figs. I, II, and III, the numeral 1 designates aflask or cheek, 2 abath-tub pattern, having the usual flange 3 extendingthereabout, and 4 the molding apparatus to which said pattern is fittedand forms a part'thereof. Arranged at intervals all the way around theinterior of said flask above the parting-surface thereof are a pluralityof inwardly-extended pins or sand-anchors 5, having their free endsturned downwardly in the form of a hook, so as to extend into. but notin contact. with the hollow side of the flange extending about thetub-pattern. The opposite ends of said pins or anchors are threadablyfitted within the flask-walls and secured by nuts 5, so that they may beadjusted to proper positions over said flange. These pins orsand-anchors I prefer shall be roughed upon their surfaces or be of suchsurface formation to cause a retention of the sand and such distanceapart as will permit the free use of the rammer in ramming up the mold.At Fig. IV, I have shown two ofa number of variations or equivalents insand-anchors for performing the same functions, that designated at 7being provided with a head, which anchor may be cast into or otherwisesecured to the flask-walls, while that designated as 8 is shown as beingintegral with the flask and provided with a serrated surface.

At Fig. V, where the methodheretofore practiced for the retention of thesand about that portion of the mold forming the tubflange is shown, thenumeral 9 designates one of a number of spikes, which is shown asembedded in the sand.

By providing the flask with or otherwise arranging therein a pluralityof fixed rods or anchors, spaced such distance apart as to not interferewith the ramming up of the mold, it will be readily apparent that thelabor and expense incurred in the manufacture of bathtubs and bodies oflike character are greatly reduced.

It is possible that other variations in the form of anchors and mannerof retaining the same in operative position may be made to perform thesame function, all of which would fall within the limits of my inventionand considered as equivalents.

Having thus fully shown and described my invention, what I claim as new,and desire to secure by Letters Patent, is

1. A flask member adapted for service in molding the outer surface ofhollow bodies having a rim of approximate concavo-convex form incross-section extending outwardly about the edge thereof, comprising asandmold receptacle having projecting inwardly and direct from the endsand side walls a multiplicity of permanent sand-retainers the inner orfree extremities of which are adapted to extend into and be buried inthe sand ridge of the mold edge forming the concave side of the body-rimonly.

2. A flask member adapted for service in molding the outer surface ofhollow bodies having a rim of approximate concavo-convex form incross-section extending outwardly about the edge thereof, comprising asandmold receptacle having projecting inwardly and direct from the endsand side walls a multiplicity of permanent hook-shaped sandretainers theinner or turned-over ends of which are adapted to extend into and beburied in the sand ridge of the mold edge forming the concave side ofthe body-rim only.

3. A molding-flask having around the ends and side walls thereofadjacent to one edge a multiplicity of horizontally-disposedinwardly-projecting sand-retainers each independently fixed to saidwalls and capable of being horizontally adjusted.

4. A molding-flask having around the ends and side walls thereofadjacent to one edge a multiplicity of horizontally-disposed hookshapedinwardly-projecting sand-retainers each independently fixed to saidwalls and capable of being horizontally adjusted.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

PETER J. MCGUIRE.

In presence of- CHAS. H. MOORE, RICHARD S. HARRISON.

